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NNTP-Posting-Date: Thu, 03 Sep 2009 03:13:53 -0500
Newsgroups: comp.lang.ada
Subject: Re: Ada Shootout program for K-Nucleotide (patches)
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From: Ole-Hjalmar Kristensen
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Organization: Sun Microsystems
Date: 03 Sep 2009 10:13:52 +0200
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Date: 2009-09-03T10:13:52+02:00
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>>>>> "GB" == Georg Bauhaus <rm.tsoh.plus-bug.bauhaus@maps.futureapps.de> writes:

    GB> Ole-Hjalmar Kristensen wrote:
    >>>>>>> "GB" == Georg Bauhaus <rm.dash-bauhaus@futureapps.de> writes:
    >> 
    >> I think the problem is not the explicit copy which happens when we hit
    >> the end of the buffer (easily verified, just increase the buffer size
    >> 10 times, the copying will happen 1/10 of the time, but execution time
    >> stays the same), but the implicit copy which seems to happen in the statement
    >> return In_Buf(Start..I-1); I do not know if this copy is unavoidable,
    >> or if the compiler could have optimized it away.

    GB> It looks like copying In_Buf(Start..I-1) be circumvented.
    GB> I have added a solution to Line_IO.

How did you avoid the copying?

-- 
   C++: The power, elegance and simplicity of a hand grenade.